Question

question in the picture

Answer 1

Explanation:

Phosphorus mass number- 31

no. of protons - 15

chlorine - atomic no - 17 no. of neutrons-17

nitrogen no. of protons,electrons,neutrons- 7

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Answer 2

Answer:

Phosphorus :Mass number =31.0u

No. of protons =15

Chlorine :Atomic number =17

No. of neutron=20

Nitrogen:No. of protons =7

electrons =7

neutrons=7

Explanation: